Patent notice ID: 1201 | This file appears in: Riegg House (relocated) A patent notice for Robert Riegg's invention, a mail chute and receptable. | Date: 1917 | Source: Annual Report of the Commissioner of Patents for the Year Download Original File SourceAnnual Report of the Commissioner of Patents for the YearDate1917 "Patent notice" appears in: Riegg House (relocated)
